CASHss99

iTrader: (2)

99 ss a4 3800stall 373 lt Qtps magnaflow catback



P0300 and P0151

i have new wires and plugs and 02s...becuz of these codes,,, month later they came back,,, now i dont know what to think or do

now what i may think is causing: i have bad u joints causing the kar to vibrate like hell in D,,, a lil leak in rear main seal,,,and a sligt metal ticking noise from engine could hear it kinda threw the headers...

Pewter_LS1

I have had to change my 02's with in a month of each other..its not too uncommon with cars with lt and exhaust..is the car tuned? maybe running rich?